249148499 has 2 divisors, whose sum is σ = 249148500. Its totient is φ = 249148498.

The previous prime is 249148441. The next prime is 249148511. The reversal of 249148499 is 994841942.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-249148499 is a prime.

It is not a weakly prime, because it can be changed into another prime (249148409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124574249 + 124574250.

It is an arithmetic number, because the mean of its divisors is an integer number (124574250).

Almost surely, 2^249148499 is an apocalyptic number.

249148499 is a deficient number, since it is larger than the sum of its proper divisors (1).

249148499 is an equidigital number, since it uses as much as digits as its factorization.

249148499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 746496, while the sum is 50.

The square root of 249148499 is about 15784.4385075935. The cubic root of 249148499 is about 629.2444953753.

The spelling of 249148499 in words is "two hundred forty-nine million, one hundred forty-eight thousand, four hundred ninety-nine".